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FUKUSHIMA, JAPAN (CNN) – Japan’s Fukushima nuclear disaster is leading to a new kind of “dark tourism.”

Almost 4 years after the meltdown forced entire towns to evacuate, tour guides are taking people through abandoned neighborhoods.

CNN finds out why one devastated town is allowing others to witness its tragedy.

The first thing people ask about is the radiation. Is it even safe to go in when most are kept out? Our local government tour guide says contamination levels are low.

They are allowing quick trips into the safer parts of Fukushima prefecture, still empty from the worst nuclear disaster since Chernobyl. Nearly 4 years later, outsiders are getting a rare look at this desolate, abandoned place.

Damage from the 2011 earthquake and tsunami sits untouched. Crumbling buildings are falling further into disrepair. Weeds are slowly taking over.